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Texas Instruments TPS62304DRCR
- Part No.:
- TPS62304DRCR
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS62304DRCR.pdf
- Description:
- IC REG BUCK 1.2V 500MA 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,663
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Product details
Overview
TPS62304DRCR from Texas Instruments is a 500-mA, 3-MHz synchronous step-down DC-DC converter in QFN-10 (3 × 3 mm) packaging, delivering fixed 1.2 V output from 2.7–6 V input. It features 86 µA quiescent current, 93% peak efficiency, 35 ns minimum on-time, and integrated power-save mode for battery-powered portable systems.
For engineers reviewing the TPS62304DRCR datasheet, TPS62304DRCR pinout, TPS62304DRCR application, or TPS62304DRCR equivalent, key selection criteria include its 1.2 V fixed output accuracy (−0.5% to +1.8% over −40°C to 85°C), 3-MHz switching frequency with external synchronization capability, and ultra-low-profile QFN-10 package optimized for space-constrained mobile designs.
Technical Context
The TPS62304DRCR employs a voltage-mode PWM controller with input voltage feed-forward for fast transient response and supports automatic PFM/PWM mode transition based on load current. Its dual MOSFET power stage integrates P-channel (750 mΩ typ.) and N-channel (750 mΩ typ.) switches with independent current limits (670–890 mA P-MOS, 550–890 mA N-MOS).
Operation is governed by a 3-MHz oscillator with ±0.35 MHz tolerance, synchronizable via MODE/SYNC pin to external clock signals in 2.65–3.35 MHz range. The device includes undervoltage lockout (2.4 V threshold), thermal shutdown (150°C), and soft-start circuitry - all implemented without external components beyond input/output capacitors and inductor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V with ±0.5% to +1.8% DC accuracy over full temperature range - ensures stable core supply for low-voltage processors. |
| Input Voltage Range | 2.7 V to 6 V - compatible with single-cell Li-ion (3.0–4.2 V), 3-cell NiMH/NiCd (3.6 V), and USB-powered systems. |
| Max Output Current | 500 mA continuous - sufficient for DSPs, microcontrollers, and RF transceivers in handheld devices. |
| Switching Frequency | 3 MHz (±0.35 MHz) - enables use of sub-1 µH inductors and small ceramic capacitors for minimal PCB footprint. |
| Quiescent Current | 86 µA in power-save mode - extends battery life in standby and light-load conditions. |
| Efficiency Peak | 93% at 3 MHz - reduces thermal load and improves energy conversion in compact portable enclosures. |
| Shutdown Current | <1 µA - meets stringent system-level power-down requirements for always-on subsystems. |
Pinout & Package
TPS62304DRCR is housed in a thermally enhanced 10-pin QFN package (3 mm × 3 mm, 0.5 mm pitch) with exposed PowerPAD™ connected to PGND for optimal thermal performance.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Main supply rail connection for power stage; requires local 4.7 µF ceramic bypass capacitor. |
| AVIN | Analog input | Separate analog supply pin for internal reference and control circuitry; decoupled from VIN to reduce noise coupling. |
| EN | Enable control | Active-high logic input; pulling to GND disables regulator and reduces current to <1 µA. |
| FB | Feedback sense | Not connected on fixed-output TPS62304DRCR - internal resistor divider sets 1.2 V output; pin must remain unconnected. |
| VOUT | Output sense | Direct connection to output node for accurate regulation; routed close to IC for minimal trace inductance. |
| AGND | Analog ground | Reference ground for feedback and control circuits; tied to PGND via PowerPAD™ under body. |
| MODE/SYNC | Mode control / sync input | GND = auto PFM/PWM; VI = forced PWM; external 3-MHz clock = synchronization - enables noise-sensitive or multi-rail timing alignment. |
| PGND | Power ground | High-current return path for power stage; connected internally to PowerPAD™ for thermal conduction. |
| SW | Switch node | Drain connection of internal P/N-MOSFETs; requires short, low-inductance routing to external inductor. |
| NC | No connect | Pin 10 on QFN-10 is unused - left floating per TI design; no external connection required. |
Key Features
| Feature | Design Value |
|---|---|
| 3-MHz fixed-frequency operation | Enables use of 0.9–2.2 µH chip inductors and 4.7 µF X5R/X7R output capacitors - reduces solution size to <10 mm². |
| Power-save mode with PFM | Maintains >85% efficiency down to 1 mA load - critical for extended battery runtime in sleep/standby states. |
| Integrated active power-down sequencing | Internal discharge resistor (30–50 Ω) rapidly collapses output during shutdown - prevents back-powering of downstream circuitry. |
| 100% duty cycle capability | Supports dropout operation as low as VI − VO = 0.5 V - preserves regulation during brownout or low-battery conditions. |
| 35 ns minimum on-time | Allows stable 1.2 V output from 2.7 V input at 3-MHz switching - essential for high step-down ratio in compact designs. |
Applications
| Smartphone Application Processor Core Supply | Bluetooth/WLAN Baseband IC Power |
|---|---|
Use Scenario: Powers ARM Cortex-A series CPU cores requiring tightly regulated 1.2 V at up to 500 mA with fast transient response. IC Role / Device Role / Timing Role: Primary buck regulator supplying digital core voltage; operates in forced PWM mode during active processing to suppress switching noise. Use Value: 35 ns minimum on-time and 3-MHz switching enable stable 1.2 V from 3.6 V battery without undershoot during 200 mA load steps. |
Use Scenario: Supplies 1.2 V to Bluetooth 5.0 and IEEE 802.11n baseband ICs in dual-mode modules. IC Role / Device Role / Timing Role: Dedicated point-of-load regulator with MODE/SYNC synchronized to system clock to avoid beat frequencies. Use Value: 93% peak efficiency and 86 µA quiescent current extend talk time while meeting EMI limits in RF-dense layouts. |
| Digital Camera Image Sensor Bias | USB-Powered DSL Modem PHY Layer |
Use Scenario: Provides clean 1.2 V bias to CMOS image sensor analog front-end in low-light capture mode. IC Role / Device Role / Timing Role: Low-noise power source operating in forced PWM mode; AVIN/VIN separation minimizes digital switching noise coupling. Use Value: 0.4 V internal reference and −0.5%/+1.8% output accuracy ensure consistent ADC reference across temperature for color fidelity. |
Use Scenario: Generates 1.2 V for DSL PHY layer ICs powered directly from USB 5 V bus via intermediate buck stage. IC Role / Device Role / Timing Role: Input-to-output step-down regulator accepting 4.75–5.25 V USB input and delivering regulated 1.2 V at 300 mA. Use Value: 2.7–6 V input range and 100% duty cycle support maintain regulation during USB port voltage sag to 4.4 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62304YZD | Same 1.2 V fixed output, but in 8-pin NanoFree™ CSP (1.5 × 1.5 mm) - 40% smaller footprint and 250°C/W θJA vs. 49°C/W for QFN. | Targeted at ultra-compact wearables and hearing aids where board area is more constrained than thermal margin. | Select TPS62304YZD when PCB real estate is critical and thermal management relies on copper pour or heat spreaders. |
| TPS62313YZD | 1.8 V fixed output, identical QFN/CSP packaging options, same 3-MHz architecture but higher UVLO (2.0 V) and 500 mA rating. | Suitable for I/O or memory rails requiring 1.8 V instead of core voltage - not a direct replacement due to output voltage mismatch. | Choose TPS62313YZD only when redesigning for 1.8 V supply; requires feedback network revision and validation of load transient behavior. |
Compared with TPS62304YZD, the TPS62304DRCR offers superior thermal performance (49°C/W vs. 250°C/W) in space-tolerant designs, while TPS62313YZD serves distinct voltage domains - neither is pin-compatible, and both require layout changes and revalidation for output voltage and thermal interface.
Availability
TPS62304DRCR is available at Aetrix Electronics and suitable for smartphone processor core supplies, Bluetooth/WLAN baseband power, digital camera sensor bias, and USB-powered DSL modem PHY layers requiring stable component supply with guaranteed long-term sourcing.
Supply support for TPS62304DRCR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies with over 50 years of innovation in high-efficiency DC-DC conversion.
The TPS623xx family was designed specifically for battery-powered portable electronics - emphasizing ultra-small solution size, high efficiency across load range, and seamless integration into space- and power-constrained mobile platforms.
FAQ
What is the output voltage tolerance of the TPS62304DRCR over temperature?
The TPS62304DRCR delivers a fixed 1.2 V output with DC voltage accuracy of −0.5% to +1.8% across the full operating temperature range of −40°C to +85°C. This specification is verified under typical conditions (VI = 3.6 V, IO = 100 mA) and accounts for internal reference drift and power train gain variation - no external trimming is required.
Can the TPS62304DRCR be synchronized to an external clock signal?
Yes, the TPS62304DRCR supports on-the-fly synchronization via the MODE/SYNC pin, accepting external clock signals in the 2.65–3.35 MHz range. When driven by a clean 3-MHz square wave with 20–80% duty cycle, the internal P-channel MOSFET turn-on aligns to the falling edge - enabling precise phase alignment across multiple TPS62304DRCR units in multi-rail systems.
What is the minimum inductor value recommended for stable operation of the TPS62304DRCR?
Texas Instruments specifies 0.9 µH as the minimum inductor value for stable TPS62304DRCR operation at 3-MHz switching frequency. Using FDK MIPW3226-series or equivalent shielded 0.9–2.2 µH inductors with ≥500 mA saturation current ensures proper current limiting, transient response, and efficiency - values below 0.9 µH risk instability and excessive ripple.
Is the FB pin used on the TPS62304DRCR?
No, the FB pin is not connected internally on the TPS62304DRCR because it is a fixed-output variant. The device uses an internal resistor divider to set 1.2 V output; connecting external components to FB will disrupt regulation. TI's datasheet explicitly states "Do not connect FB pin on fixed output voltage version of TPS6230xDRC" - leaving it unconnected is mandatory.
How does the TPS62304DRCR handle thermal overload conditions?
The TPS62304DRCR incorporates thermal shutdown protection that activates at 150°C junction temperature, halting switching and forcing the device into safe high-impedance state. After cooling by ≥20°C hysteresis, it automatically recovers. This behavior is validated across all package variants and requires no external circuitry - PCB layout with adequate copper pour under the PowerPAD™ is essential for reliable thermal management.
TPS62304DRCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- -
- Current - Output:
- 500mA
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSON (3x3)
TPS62304DRCR FAQ
1.How can I place an order for TPS62304DRCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62304DRCR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS62304DRCR reliable?
The price and inventory of TPS62304DRCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62304DRCR is usually 5 days.
3.What payment methods are accepted for TPS62304DRCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62304DRCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62304DRCR?
TPS62304DRCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62304DRCR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS62304DRCR?
For technical support, including TPS62304DRCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62304DRCR requirements.
6.How does Aetrix verify that TPS62304DRCR is sourced from the original manufacturer or authorized distributors?
All TPS62304DRCR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS62304DRCR meets industry standards.
7.What is the process for return or replacement of TPS62304DRCR?
All TPS62304DRCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62304DRCR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS62304DRCR part is unused and in its original packaging.
Return procedure for TPS62304DRCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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